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3 years ago

A system of equations can be written to represent coin and pricing problems. True or False.

1 answer:

soldier1979 [14.2K]3 years ago

3 0

<span>The answer to this question is True. Apparently, there are a lot of mathematical problems regarding coin and pricing problems can be written with a system of equations.</span>

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Which number is less than -2 4/5 but greater than -3 1/5

Alex_Xolod [135]

If you need help with things like this, put the fractions into decimals.
A number that is less than -2.8 and greater than -3.2

A -3.5
B -3.666
C -2.5
D -2.875
The answer is C

5 0

3 years ago

If x2-y2 = 10 and x+y = 5, what is the value of x-y? 2-5?

netineya [11]

Answer:

x-y=2

I don't get why they are asking you what is 2-5. That seems super basic compared to the other question it is with. Since 5-2=3, then 2-5 or -5+2=-3.

Step-by-step explanation:

We are going to use identity x^2-y^2=(x-y)(x+y)

x^2-y^2=10

(x-y)(x+y)=10

(x-y)(5)=10

Since (2)(5)=10, this implies x-y=2.

8 0

2 years ago

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of

Sophie [7]

Answer:

Probability that both cans were regular soda = $\frac{1}{11}$

Step-by-step explanation:

Probability = $\frac{Desired outcome}{Total possible outcomes}$

We are given 12 total number of cans; 4 cans have been accidentally filled with diet soda.

Probability that first can is a regular soda:

Outcome that first can is a regular soda will give us the number of regular soda available which are 4

Using formula of probability

Total possible outcomes are, n(total) = 12

Desired outcome: 4 (cans of regular soda)

P(1st can) = $\frac{4}{12}$ = $\frac{1}{3}$

Probability that 2nd can is a regular soda:

<em>As we have already taken a can of regular soda from the pack, the total soda in the pack now 11 and the regular soda left are 3.</em>

Total possible outcomes are, n(total) = 11

Desired outcome: 3 (cans of regular soda as one has already been taken)

P(2nd can) = $\frac{3}{11}$

Probability that both cans are regular soda:

P(both) = P(1st can) × P(2nd can)

= $\frac{1}{3} * \frac{3}{11}$

= $\frac{1}{11}$

3 0

3 years ago

Read 2 more answers

Do the ratios 8/16 and 2/4 form a proportion

notsponge [240]

Answer:

Step-by-step explanation:

8/16=8:16

2/4=2:4

7 0

3 years ago

A 34-foot tall utility pole is supported by two wires that are anchored 8 feet from the

Andrew [12]

Answer:34.93

Step-by-step explanation:

Using a^2+b^2=c^2we can substitute a and b in which is 34^2+8^2=c^21156+64=c^21220 = c^2Now we need to square both sides√1220 = √c^234.9284983931 ----> 34.9334.93 = cc = 34.93

7 0

2 years ago